30028769 has 16 divisors (see below), whose sum is σ = 31825920. Its totient is φ = 28304640.

The previous prime is 30028763. The next prime is 30028781. The reversal of 30028769 is 96782003.

It is a cyclic number.

It is not a de Polignac number, because 30028769 - 2¹⁶ = 29963233 is a prime.

It is a super-2 number, since 2×30028769² = 1803453935310722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30028763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236384 + ... + 236510.

It is an arithmetic number, because the mean of its divisors is an integer number (1989120).

Almost surely, 2^30028769 is an apocalyptic number.

It is an amenable number.

30028769 is a deficient number, since it is larger than the sum of its proper divisors (1797151).

30028769 is a wasteful number, since it uses less digits than its factorization.

With its successor (30028770) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (320).

30028769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 30028769 is about 5479.8511841108. The cubic root of 30028769 is about 310.8225432760.

The spelling of 30028769 in words is "thirty million, twenty-eight thousand, seven hundred sixty-nine".